1. The problem statement, all variables and given/known data 2. Relevant equations R2=R1(1+alpha(t2-t1)) 3. The attempt at a solution R1=250/5=50ohms R2=250/3.91=63.94ohms R2=R1(1+alpha15degrees(t2-t1)) 63.94=50(1+1/254.5(t2-15)) t2= Now I found this online but the answers provided still don't match, 84.25 being the closest. When I manipulate the equation I get a totally different answer: 63.94=50(1+1/254.5(t2-15)) 63.94/50=(1+1/254.5(t2-15)) 1.2788/1+1/254.5=t2-15 1.274=t2-15 t2=1.274+15=16.274 degrees Please help me understand where I am going wrong.